Bicycle frame



FIG. 1 is a left side elevation view of a bicycle frame in accordance with the present invention, the right side elevation view being a mirror image thereof;

FIG. 2 is a bottom plan view of the bicycle frame of FIG. 1;

FIG. 3 is a top plan view of the bicycle frame of FIG. 1;

FIG. 4 is a front elevation view of the bicycle frame of FIG. 1;

FIG. 5 is a rear elevation view of the bicycle frame of FIG. 1; and,

FIG. 6 is a perspective view of the bicycle frame of FIG. 1.

The broken lines shown are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a bicycle frame, as shown and described. 